Melly, despite my fears, was pretty well-behaved during the cap application. She actually purred during the front claw part! Like Scarlett, Melly did a lot of grooming when the process was over (and after I'd observed her for a bit). She managed to get one of the caps off, but it was replaced quickly and without incident.
Close-up shot of Melly's paws with caps. I got the clear ones, so they're not too visible. They spread Melly's toes a bit, so her paws look very round and bubble-like, which is kind of cute.
My main hope for the Soft Paws is that they keep Melly from drawing too much blood, feline as well as human. Her teeth are pretty hazardous, but if we can keep her to one deadly weapon, I think everyone will be a lot happier.